Python TCPServer 多线程多客户端通信

最简单、原始的TCP通信demo

服务端Http请求：

import socket

# 创建一个servicesocke
serviceSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 给服务器绑定地址(ip地址,端口号)
serviceSocket.bind(("192.168.171.1", 80))

print("等待客户端接入")
# sock 是客户端的socket信息
# addr 是客户端的地址(ip,端口)
sock, addr = serviceSocket.accept()
print(f"sock from client:{sock}")
print(f"addr of client:{addr}")

while True:
    # 接收客户端的请求
    recvData = sock.recv(1024)
    print("客户端说:%s" % (recvData.decode("utf-8")))
    sendData = input("服务器说:")
    # 发送(回复)数据给客户端
    sock.send(sendData.encode("utf-8"))

客户端Http请求：

import socket

# 创建客户端socket
clientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接服务器
clientSocket.connect(("192.168.171.1", 80))

while True:
    # 发送消息给服务器
    sendData = input("客户端说:")
    if sendData == "bye":
        clientSocket.send(sendData.encode("utf-8"))  # 编码:将数据装换成二进制形式
        break
    clientSocket.send(sendData.encode("utf-8"))
    recvData = clientSocket.recv(1024)
    print("服务器说:%s" % (recvData.decode("utf-8")))  # 解码:将二进制转换成字符

1、在TCP中，客户端的实现流程：

1. 创建客户端的socket对象
2. 建立与服务器之间的联系
3. 发送请求
4. 接收数据
5. 关闭连接

2、服务端的实现流程：

1. 创建服务端的socket对象
2. 绑定服务端的地址
3. 设置监听器
4. 等待客户端的连接
5. 接收客户端的请求
6. 返回处理的结果到客户端

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ThreadingTCPServer 多线程多客户端通信自动重连demo

---

TCPServer

# from socketserver import TCPServer, BaseRequestHandler, ThreadingTCPServer
from socketserver import TCPServer, StreamRequestHandler, ThreadingMixIn
import traceback

# class MyBaseRequestHandler(BaseRequestHandler):
class MyBaseRequestHandler(StreamRequestHandler):

    def handle(self):
        self.addr = self.request.getpeername()
        self.server.users[self.addr[1]] = self.request
        message = "IP " + self.addr[0] + ":" + str(self.addr[1]) + " Connected..."
        print(message)

        while True:
            try:
                data = self.request.recv(1024).decode('UTF-8', 'ignore').strip()
                print(f'receive from {self.client_address}:{data}')

                back_data = (f"response\"" + data + "\":\n").encode("utf8")
                self.request.sendall(back_data)
            except:
                traceback.print_exc()
                break

# 源码：class ThreadingTCPServer(ThreadingMixIn, TCPServer): pass
# 从ThreadingMixIn和TCPServer继承，实现多线程
class MyThreadingTCPServer(ThreadingMixIn, TCPServer):
    def __init__(self, server_address, RequestHandlerClass):
        TCPServer.__init__(self, server_address, RequestHandlerClass)
        self.users = {}


class MyTCPserver():
    def __init__(self, server_addr='192.168.1.109', server_port=23):
        self.server_address = server_addr
        self.server_port = server_port
        self.server_tuple = (self.server_address, self.server_port)

    def run(self):
        # server = TCPServer(self.server_tuple, MyBaseRequestHandler)
        server = MyThreadingTCPServer(self.server_tuple, MyBaseRequestHandler)
        server.serve_forever()


if __name__ == '__main__':
    myserver = MyTCPserver()
    myserver.run()

在telnet 下开启开启两个客户端，本电脑的IP为192.168.1.109，开两个客户端后，TCPServer的终端出现同一个IP但是不同端口的连接：

---

TCPClient

import socket
import time

class MyClient:
    host = '192.168.1.109'
    port = 23
    bufsiz = 1024
    addr = None
    skt = None

    def __init__(self, host=None, port=None):
        if host != None:
            self.host = host

        if port != None:
            self.port = port

        if self.addr == None:
            self.addr = (self.host, self.port)

        self.doConnection()

    def doConnection(self):
        try:
            self.skt = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            self.skt.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
            print(self.addr)
            self.skt.connect(self.addr)
        except:
            pass

    def run(self):
        while True:
            try:
                _time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
                self.skt.sendall(f'{_time}:i am clent1 '.encode('utf-8'))
                data = self.skt.recv(self.bufsiz)
                print(data.decode('utf-8', 'ignore'))
                if not data:
                    break
                print(data.strip())
                time.sleep(5)
            except socket.error:
                print('socket error, reconnection')  # 自动重连
                time.sleep(3)
                self.doConnection()
            except:
                print('other error')

        self.skt.close()


myclient = MyClient()
myclient.run()

上面用的是telnet工具来作为客户端，这里是用代码实现模拟的客户端。